linux-xanmod-zfs/choose-gcc-optimization.sh

#!/usr/bin/env bash

. /usr/share/makepkg/util/message.sh
colorize

Detect_CPU=$(gcc -c -Q -march=native --help=target | grep march | awk '{print $2}' | head -1)

msg "Detected CPU architecture: $Detect_CPU"

cat << EOF

    Available CPU microarchitectures:

    1) AMD K6/K6-II/K6-III
    2) AMD Athlon/Duron/K7
    3) AMD Opteron/Athlon64/Hammer/K8
    4) AMD Opteron/Athlon64/Hammer/K8 with SSE3
    5) AMD 61xx/7x50/PhenomX3/X4/II/K10
    6) AMD Family 10h (Barcelona)
    7) AMD Family 14h (Bobcat)
    8) AMD Family 16h (Jaguar)
    9) AMD Family 15h (Bulldozer)
   10) AMD Family 15h (Piledriver)
   11) AMD Family 15h (Steamroller)
   12) AMD Family 15h (Excavator)
   13) AMD Family 17h (Zen)
   14) AMD Family 17h (Zen 2)
   15) AMD Family 19h Zen 3 processors (Zen 3)
   16) Transmeta Crusoe
   17) Transmeta Efficeon
   18) IDT Winchip C6
   19) Winchip-2/Winchip-2A/Winchip-3
   20) AMD Elan
   21) Geode GX1 (Cyrix MediaGX)
   22) AMD Geode GX and LX
   23) Cyrix III or C3
   24) VIA C3 "Nehemiah"
   25) VIA C7
   26) Intel Pentium 4, Pentium D and older Nocona/Dempsey Xeon CPUs with Intel 64bit
   27) Intel Atom
   28) Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and 53xx)
   29) Intel 1st Gen Core i3/i5/i7-family (Nehalem)
   30) Intel 1.5 Gen Core i3/i5/i7-family (Westmere)
   31) Intel Silvermont
   32) Intel Goldmont (Apollo Lake and Denverton)
   33) Intel Goldmont Plus (Gemini Lake)
   34) Intel 2nd Gen Core i3/i5/i7-family (Sandybridge)
   35) Intel 3rd Gen Core i3/i5/i7-family (Ivybridge)
   36) Intel 4th Gen Core i3/i5/i7-family (Haswell)
   37) Intel 5th Gen Core i3/i5/i7-family (Broadwell)
   38) Intel 6th Gen Core i3/i5/i7-family (Skylake)
   39) Intel 6th Gen Core i7/i9-family (Skylake X)
   40) Intel 8th Gen Core i3/i5/i7-family (Cannon Lake)
   41) Intel 8th Gen Core i7/i9-family (Ice Lake)
   42) Xeon processors in the Cascade Lake family
   43) Intel Xeon (Cooper Lake)
   44) Intel 3rd Gen 10nm++ i3/i5/i7/i9-family (Tiger Lake)
   45) Intel Sapphire Rapids
   46) Intel Rocket Lake
   47) Intel Alder Lake

   92) Generic-x86-64-v2 (Nehalem and newer)
   93) Generic-x86-64-v3 (Haswell and newer)
   94) Generic-x86-64-v4 (AVX512 CPUs)

   98) Intel-Native optimizations autodetected by GCC
   99) AMD-Native optimizations autodetected by GCC

    0) Generic x64-v1 (default)
    
EOF

sleep 1
answer=$1

case $answer in
    1) Microarchitecture=CONFIG_MK6 ;;
    2) Microarchitecture=CONFIG_MK7 ;;
    3) Microarchitecture=CONFIG_MK8 ;;
    4) Microarchitecture=CONFIG_MK8SSE3 ;;
    5) Microarchitecture=CONFIG_MK10 ;;
    6) Microarchitecture=CONFIG_MBARCELONA ;;
    7) Microarchitecture=CONFIG_MBOBCAT ;;
    8) Microarchitecture=CONFIG_MJAGUAR ;;
    9) Microarchitecture=CONFIG_MBULLDOZER ;;
   10) Microarchitecture=CONFIG_MPILEDRIVER ;;
   11) Microarchitecture=CONFIG_MSTEAMROLLER ;;
   12) Microarchitecture=CONFIG_MEXCAVATOR ;;
   13) Microarchitecture=CONFIG_MZEN ;;
   14) Microarchitecture=CONFIG_MZEN2 ;;
   15) Microarchitecture=CONFIG_MZEN3 ;;
   16) Microarchitecture=CONFIG_MCRUSOE ;;
   17) Microarchitecture=CONFIG_MEFFICEON ;;
   18) Microarchitecture=CONFIG_MWINCHIPC6 ;;
   19) Microarchitecture=CONFIG_MWINCHIP3D ;;
   20) Microarchitecture=CONFIG_MELAN ;;
   21) Microarchitecture=CONFIG_MGEODEGX1 ;;
   22) Microarchitecture=CONFIG_MGEODE_LX ;;
   23) Microarchitecture=CONFIG_MCYRIXIII ;;
   24) Microarchitecture=CONFIG_MVIAC3_2 ;;
   25) Microarchitecture=CONFIG_MVIAC7 ;;
   26) Microarchitecture=CONFIG_MPSC ;;
   27) Microarchitecture=CONFIG_MATOM ;;
   28) Microarchitecture=CONFIG_MCORE2 ;;
   29) Microarchitecture=CONFIG_MNEHALEM ;;
   30) Microarchitecture=CONFIG_MWESTMERE ;;
   31) Microarchitecture=CONFIG_MSILVERMONT ;;
   32) Microarchitecture=CONFIG_MGOLDMONT ;;
   33) Microarchitecture=CONFIG_MGOLDMONTPLUS ;;
   34) Microarchitecture=CONFIG_MSANDYBRIDGE ;;
   35) Microarchitecture=CONFIG_MIVYBRIDGE ;;
   36) Microarchitecture=CONFIG_MHASWELL ;;
   37) Microarchitecture=CONFIG_MBROADWELL ;;
   38) Microarchitecture=CONFIG_MSKYLAKE ;;
   39) Microarchitecture=CONFIG_MSKYLAKEX ;;
   40) Microarchitecture=CONFIG_MCANNONLAKE ;;
   41) Microarchitecture=CONFIG_MICELAKE ;;
   42) Microarchitecture=CONFIG_MCASCADELAKE ;;
   43) Microarchitecture=CONFIG_MCOOPERLAKE ;;
   44) Microarchitecture=CONFIG_MTIGERLAKE ;;
   45) Microarchitecture=CONFIG_MSAPPHIRERAPIDS ;;
   46) Microarchitecture=CONFIG_MROCKETLAKE ;;
   47) Microarchitecture=CONFIG_MALDERLAKE ;;
   92) Microarchitecture=CONFIG_GENERIC_CPU2 ;;
   93) Microarchitecture=CONFIG_GENERIC_CPU3 ;;
   94) Microarchitecture=CONFIG_GENERIC_CPU4 ;;
   98) Microarchitecture=CONFIG_MNATIVE_INTEL ;;
   99) Microarchitecture=CONFIG_MNATIVE_AMD ;;
    *) default=CONFIG_GENERIC_CPU ;;
esac

warning "According to PKGBUILD variable _microarchitecture, your choice is $answer"
msg "Building this package for microarchitecture: $Microarchitecture$default"
sleep 5

_defaultmicro=$(grep ^CONFIG_LOCALVERSION .config)
if [ -z "${default}" ]; then
    _localversion=$(echo ${Microarchitecture,,} | sed -e 's/config_m/-/g' -e 's/config_generic_cpu/-x64v/g')
    sed -e "s|^$_defaultmicro|CONFIG_LOCALVERSION=\"$_localversion\"|g" -i .config
fi

sed -e 's|^CONFIG_GENERIC_CPU=y|# CONFIG_GENERIC_CPU is not set|g' -i .config
sed -e 's|^CONFIG_GENERIC_CPU2=y|# CONFIG_GENERIC_CPU2 is not set|g' -i .config
sed -e 's|^CONFIG_GENERIC_CPU3=y|# CONFIG_GENERIC_CPU3 is not set|g' -i .config
sed -e 's|^CONFIG_GENERIC_CPU4=y|# CONFIG_GENERIC_CPU4 is not set|g' -i .config
sed -e "s|^# $Microarchitecture is not set|$Microarchitecture=y|g" -i .config

echo